ASTROSAT CZTI

Data Quality Report

Orbit 43781

Creation date: 2024-06-27T22:55:42.802003
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_026T01_9000005904_43781cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43781cztM0_level2_quad_clean.evt
Size (bytes)760,481,28096,572,160
Size725.3 MB 92.1 MB
Events in quadrant A5,838,403684,644
Events in quadrant B4,984,143718,399
Events in quadrant C4,253,861723,896
Events in quadrant D12,561,721335,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220902
B0192432
C0171742
D0418282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A661370610.675941%
B66145488.285455%
C66142523.810100%
D6614357254.006653%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7308 6615 410 410 5.61% 6.20%
B 7309 6616 325 325 4.45% 4.91%
C 7309 6616 192 192 2.63% 2.90%
D 7309 6615 3263 3263 44.64% 49.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 223 1651788 10604.45 742 726 155.7
A 10 83 987807 6339.83 742 726 155.7
A 13 248 242856 1555.15 742 726 155.7
B 5 235 828030 5639.14 751 730 146.7
B 0 200 325726 2215.28 751 730 146.7
B 5 172 304357 2069.62 751 730 146.7
C 15 158 763616 4300.02 744 748 177.4
C 14 254 163955 919.94 744 748 177.4
C 3 233 162568 912.12 744 748 177.4
D 12 33 7422938 47288.53 595 576 157.0
D 5 235 1091576 6950.86 595 576 157.0
D 1 52 422039 2685.18 595 576 157.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter